Announcement PDF : – – • New zones of shallow, high-grade tin mineralisation intersected, including: TBRC253: 5m @ 1.63% tin from 6m, including: 1m @ 7.44% tin & 13.9g/t silver from 6m. TBRC254: 8m @ 0.34% tin & 72.1g/t silver from 88m, including: 2m @ 0.46% tin & 144g/t silver from 92m. TBRC255: 9m @ 0.31% tin & 37.7g/t silver from 30m, including. 1m @ 1.44% tin & 232g/t silver from 34m TBRC232: 13m @ 0.26% tin from 41m, including: 5m @ 0.57% tin & 16.7g/t silver from 49m. • New assays upgrade the high-grade silver-tin zone intersected on the south-eastern margin of deposit, returning an updated intercept of: TBRC171: 3m @ 686.3g/t silver & 0.96% tin from 24m. • Re-assaying has increased the silver grade by over 5% with the re-assay completed using a method more appropriate for the high-grade nature of the silver mineralisation. • Drilling expected to re-commence imminently, with approvals anticipated in the coming week. The first holes in program will target extensions to the upgraded high-grade silver zone encountered in TBRC171. • A further +100 holes are planned for this new drilling program, comprising both diamond and Reverse Circulation (RC) drilling. SKY Managing Director & CEO Oliver Davies commented: “The upgraded silver grades in TBRC171 and the discovery of multiple new shallow high-grade tin zones underscores the rapidly evolving scale and quality of the Tallebung system. These excellent results are testament to the strength of our geological team and their ability to consistently deliver high-impact outcomes, as reflected in the outstanding results generated by this latest drilling program. The high-grade silver-tin intercept on the south-eastern margin is particularly encouraging, opening up a new target area for immediate follow-up. With approvals for the next phase of drilling expected shortly, we’re entering a new stage of growth at Tallebung, one that positions SKY to unlock further value from this uniquely mineralised system and propel the project further towards development.” Watch a video summary of this announcement & engage with SKY here SKY METALS LIMITED +61 2 6360 1587 2 HAWTHORN PLACE, ORANGE NSW 2800 WWW.SKYMETALS.COM.AU ABN 46 098 952 035 Sky Metals Limited (ASX: SKY) is pleased to report assay results from the final Reverse Circulation (RC) drill-holes completed as part of the recent highly successful resource expansion drilling campaign at its 100%-owned Tallebung Project in NSW. The final batch of assay results from the recent program has returned further significant high-grade tin-silver intercepts, further expanding the mineralised footprint of the deposit and confirming the presence of multiple new shallow zones of mineralisation. Building on the success of this program, a new drilling program is expected to commence shortly targeting further growth in the deposit and in-fill of the higher-grade zones. TALLEBUNG TIN PROJECT (EL 6699, SKY 100%) TALLEBUNG RC DRILLING CONTINUES TO INTERSECT SHALLOW, HIGH-GRADE TIN-SILVER ZONES The latest results continue to demonstrate the exceptional grade and continuity of the mineralisation at Tallebung. TBRC253 returned a standout intercept of 1m @ 7.44% tin from just 6m depth, highlighting the near-surface nature of the mineralisation and its potential for low-cost open-pit development. (see Figure 1). Figure 1: Plan showing the location of the drill-holes in the latest program, including new assay results, new extensional drill-holes and selected previously reported highlight drill intercepts. The boundary of the existing Tallebung MRE is also shown over surface geology and holes not included in the last MRE are in green. 2 Holes TBRC254 and TBRC255 confirm the presence of multiple stacked tin-silver zones across the central and southern portions of the deposit, with silver grades exceeding 200g/t in some intervals. These results are consistent with the broader mineral system and reinforce the polymetallic potential of the project. Northern extensions to the deposit have also been discovered, as demonstrated in TBRC232, which intersected broad zones of tin mineralisation and encouraging silver grades. ASSAY UPGRADE – TBRC171 New assays from drill-hole TBRC171 have upgraded the previously reported silver content by more than 5%, confirming an intercept of 3m @ 686.3g/t silver and 0.96% tin from 24m. The original assay returned a silver grade of 1,500ppm using ALS Brisbane’s ME-OG62 method, which has an upper reporting limit of 1,500ppm but can detect values up to 2,000ppm. Given the proximity of the result to the method’s detection limit, SKY requested a re-assay to ensure accuracy. ALS Brisbane subsequently conducted the re-assay using the ME-OG62h method, which is specifically designed for high-grade silver samples. This re-assay returned a revised grade of 1,625ppm silver, confirming a significant upgrade and further validating the presence of extremely high-grade silver mineralisation in this part of the deposit. This intercept remains one of the highest-grade silver zones identified at Tallebung and will be a key target in the upcoming drilling program. DRILLING TO RE-COMMENCE IMMINENTLY Sky Metals has submitted approvals for a follow-up drilling program targeting these new high-grade zones. Over 100 drill-holes are planned, comprising a mix of diamond and RC drilling. This next phase of drilling will focus on expanding the high-grade zones and in-filling areas for to upgrade the resource. RC drilling will be employed to rapidly and efficiently in-fill and follow up on newly identified extensions to the deposit, targeting shallow high-grade zones with minimal delay. In parallel, diamond drilling will be conducted in key areas to investigate the structural controls on the mineralisation and support geotechnical studies. These geotechnical insights will be critical for optimising open pit mine design and advancing the project through future mining studies. Approvals are expected within the coming week, with drilling to re-commence immediately thereafter. This announcement is authorised for release by the Board of Sky Metals Limited. Investors: Oliver Davies – Managing Director & CEO +61 (0) 430 359 547 Media: Nicholas Read – Read Corporate +61 (0) 419 929 046 3 JOIN SKY METALS’ INTERACTIVE INVESTOR HUB Visit skymetals.com.au to interact with Sky Metals’ announcements and updates To watch a video summary of this announcement & engage with SKY click here About the Tallebung Tin Project (100% SKY) Tallebung stands as an open-pit, technology enabled, near-term tin development project. Tallebung is uniquely placed to provide secure tin supply, to feed irreplaceable and rapidly expanding tin demand, essential in semiconductors, electronics and solar PV technologies. The Tallebung Tin Project is located at the site of large-scale historical tin mining in central Western NSW where tin was first discovered in the 1890s. SKY is progressively defining a large-scale hardrock tin resource with recent higher-grade tin zones discovered on the margins of the known deposit and exceptional metallurgical performance demonstrated across the entire known deposit. The shallow, open-pit tin veins combined with the ideal nature of the tin, hosted as large, discrete grains of simple tin-oxide (cassiterite minerals), all ideally lends itself to low-cost tin production advantages, including exceptional X-ray based ore sorting performance, demonstrated to upgrade the tin up to 44x, prior to low-cost gravity separation to produce a saleable tin concentrate. Competent Persons Statement The information in this report that relates to Exploration Results is based on information compiled by Mr. Oliver Davies, who is a Member of the Australasian Institute of Geoscientists. Mr. Oliver Davies is an employee and director of Sky Metals Ltd and has sufficient experience which is relevant to the style of mineralisation and type of deposit under consideration and to the activity which he is undertaking to qualify as a Competent Person as defined in the 2012 Edition of the ‘Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves.’ Mr. Davies consents to the inclusion in this report of the matters based on his information in the form and context in which it appears. Previously Reported Information The information in this report that references previously reported exploration results is extracted from the Company’s ASX market announcements released on the date noted in the body of the text where that reference appears. The previous market announcements are available to view on the Company's website or on the ASX website (www.asx.com.au). The Company confirms that it is not aware of any new information or data that materially affects the information included in the original market announcements. The Company confirms that the form and context in which the Competent Person’s findings are presented have not been materially modified from the original market announcements. Disclaimer This report contains certain forward-looking statements and forecasts, including possible or assumed reserves and resources, production levels and rates, costs, prices, future performance or potential growth of Sky Metals Ltd, industry growth or other trend projections. Such statements are not a guarantee of future performance and involve unknown risks and uncertainties, as well as other factors which are beyond the control of Sky Metals Ltd. 4 Actual results and developments may differ materially from those expressed or implied by these forward-looking statements depending on a variety of factors. Nothing in this report should be construed as either an offer to sell or a solicitation of an offer to buy or sell securities. This document has been prepared in accordance with the requirements of Australian securities laws, which may differ from the requirements of United States and other country securities laws. Unless otherwise indicated, all ore reserve and mineral resource estimates included or incorporated by reference in this document have been, and will be, prepared in accordance with the JORC classification system of the Australasian Institute of Mining, and Metallurgy and Australian Institute of Geoscientists. Table 1: Drillhole coordinates (MGA94 Zone 55). Hole ID Easting (MGA) Northing (MGA) RL (m) DIP Azimuth (MGA) Total Depth (m) Comment TBRC221 460086.945 6377196.96 296.775 -59.69 256.43 120 Completed TBRC222 460156.828 6377221.89 293.265 -60.04 251.81 120 Completed TBRC223 460291.393 6377261.2 285.284 -59.51 251.94 120 Completed TBRC224 460287.504 6377217.82 284.514 -59.85 251.03 120 Completed TBRC225 460348.276 6377331.49 284.532 -59.33 252.96 120 Completed TBRC226 460246.294 6377336.44 287.962 -59.81 256.24 120 Completed TBRC227 460216.192 6377448.66 286.854 -59.72 253.58 120 Completed TBRC228 460118.589 6377134.19 290.1 -59.28 250.75 120 Completed TBRC229 459945.575 6377264.57 297.544 -59.93 248.48 120 Completed TBRC230 460024.104 6377291.23 299.239 -59.41 254.35 120 Completed TBRC231 460020.927 6377365.04 293.333 -59.34 252.89 120 Completed TBRC232 460096.618 6377357.62 291.751 -60.1 252.56 120 Completed TBRC233 460091.966 6377305.78 295.408 -59.79 252.29 120 Completed TBRC234 460270.564 6377488.18 284.42 -59.35 257.07 120 Completed TBRC235 460068.508 6377437.65 289.538 -59.53 253.89 120 Completed TBRC236 459971.029 6377584.62 286.574 -59.44 251.2 120 Completed TBRC237 459931.256 6377463.71 288.52 -60.05 251.78 120 Completed TBRC238 460040.209 6377478.09 288.45 -59.67 249.26 120 Completed TBRC239 460478.464 6376593.44 285.9 -59.6 250.06 102 Completed TBRC240 460551.626 6376586.4 285.433 -59.7 252.1 102 Completed TBRC241 460829.102 6376578.51 287.234 -60.12 250.64 102 Completed TBRC242 460888.858 6376497.93 287.864 -59.65 250.62 102 Completed TBRC243 460898.785 6376437.83 289.564 -60.13 250.27 102 Completed TBRC244 460755.525 6376446.78 293.93 -60.08 258.23 120 Completed TBRC245 460756.845 6376496.06 291.529 -60.05 252.26 120 TBRC246 460779.413 6376819.91 276.751 -59.39 250.68 120 TBRC247 460684.114 6376537.91 287.921 -59.66 250.69 120 Completed Completed. 0-14m Tailings backfill. 16m no sample recovery. 8-12m no sample-Cavity Completed TBRC248 460558.667 6376664.82 282.213 -60.05 247.4 102 Completed TBRC249 460641.594 6376474.76 291.682 -60.64 248.92 120 Completed TBRC250 460653.45 6376440.31 293.715 -60.16 248.79 102 Completed TBRC251 460685.661 6376432.31 295.987 -59.44 249.72 120 Completed TBRC252 460720.339 6376440.89 295.783 -59.89 248.97 120 Completed TBRC253 460626.815 6376554.08 285.709 -59.91 246.84 120 Completed TBRC254 460786.101 6376565.8 287.68 -60.08 245.32 102 Completed TBRC255 460833.581 6376604.84 285.375 -59.97 258.26 120 Completed TBRC256 460809.269 6376677.17 284.82 -59.65 246.03 120 Completed TBRC257 460834.851 6376777.33 283.954 -64.95 251.48 120 Completed TBRC258 460880.226 6376986.56 272.441 -59.83 251.54 17 Abandoned 5 Table 2: Tallebung Tin Project – Significant Intercepts. Hole ID From To Interval Sn W Ag Cu Zn (m) (m) (m) % % g/t % % TBRC171 24 27 3 0.96 - 686.3 0.08 - including 24 25 1 0.98 - 1625 0.11 - and 25 26 1 1.82 0.02 408 0.1 - TBRC222 1 13 12 0.21 0.02 12.5 - - including 10 13 3 0.34 0.04 36.3 - - 17 18 1 0.1 - 13.2 - - 28 29 1 0.18 0.03 67.4 - - 35 46 11 0.26 0.03 13.7 - - 35 38 3 0.59 0.08 29.6 - - 81 82 1 0.5 0.14 - - - 88 89 1 0.06 0.11 - 0.05 1.74 100 101 1 0.12 - - - 0.71 113 114 1 0.13 0.02 - - - 117 120 3 0.15 0.07 17 - 0.93 43 46 3 0.24 - - - - 70 74 4 0.26 - - - - 72 73 1 0.78 - - - - 84 91 7 0.18 - - - - 85 86 1 0.96 - - - - 103 104 1 0.35 - - - - 14 16 2 0.41 - - - - 41 42 1 0.11 - - - - 45 46 1 0.19 - - - - 55 56 1 0.1 - - - - 58 64 6 0.1 - 15.5 - - 63 64 1 0.35 0.02 78.6 - - 75 76 1 0.74 - 179 - - 23 24 1 0.16 - 57.4 - - 49 52 3 0.1 - - - - TBRC227 3 4 1 0.14 - - - - TBRC228 5 6 1 0.14 - - - - 10 11 1 0.1 - 30.1 - - 28 31 3 0.13 0.04 - - - 28 29 1 0.27 0.03 - - - 38 39 1 0.1 0.04 - - - 45 61 16 0.15 0.03 - - - 54 57 3 0.51 0.06 26.9 - - 70 75 5 0.18 0.09 26.8 0.07 0.45 70 71 1 0.56 0.06 22.1 0.09 - 84 85 1 0.13 0.03 - - - 2 3 1 0.24 0.03 - - - 52 53 1 0.22 - - - - including TBRC223 including including TBRC224 including TBRC226 including including including TBRC229 6 Comment Zinc-rich vein Open to End of Hole (EOH) Hole ID TBRC230 TBRC231 including From To Interval Sn W Ag Cu Zn (m) (m) (m) % % g/t % % 0 4 4 0.1 - - - - 8 9 1 0.33 0.11 46.8 - - 30 34 4 0.13 - - - - 42 44 2 0.15 0.03 - - - 68 73 5 0.15 - - - - 93 94 1 0.1 - - - - 7 11 4 0.12 0.02 - - - 16 29 13 0.1 - - - - 16 17 1 0.28 0.04 30.2 0.07 - 59 60 1 0.15 0.03 22.2 - - 72 76 4 0.12 0.07 17.9 - - 96 98 2 0.17 - - - - 105 114 9 0.11 - - - - 105 106 1 0.49 0.08 - - - TBRC232 41 54 13 0.26 0.02 - - - including 49 54 5 0.57 0.03 16.7 - - including 50 51 1 1.22 0.03 12.5 - - 61 69 8 0.15 - - - - 67 69 2 0.45 - - - - 83 84 1 0.55 0.06 - - - 113 114 1 0.44 0.04 - - - 0 3 3 0.25 0.02 11.8 - - 11 12 1 0.06 0.13 15.8 - - 18 25 7 0.12 - 10.2 - - 41 43 2 0.15 - 13.6 - - 75 76 1 0.12 - - - - 82 84 2 0.17 - - - - 87 88 1 0.1 - - - - 100 101 1 0.11 - 17.5 0.07 1.13 111 112 1 0.11 - - - - 113 114 1 0.13 - 13.8 - 0.68 31 33 2 0.12 - - - - 102 103 1 0.12 - 38 - - TBRC237 4 12 8 0.21 - - - - including 7 8 1 0.75 0.02 - - - TBRC238 17 18 1 0.11 - - - - 23 24 1 0.11 0.02 - - - 34 35 1 0.21 - - - - 39 41 2 0.16 - - - - 65 66 1 0.19 - - - - 6 7 1 0.82 - - - - 51 52 1 0.1 - 14.1 - - 5 11 6 0.11 - 40.6 - - 20 21 1 0.39 - - - - including TBRC233 TBRC236 TBRC239 TBRC240 7 Comment Hole ID From To Interval Sn W Ag Cu Zn (m) (m) (m) % % g/t % % 41 42 1 0.19 0.02 - - - 95 100 5 0.22 - - - - including 99 100 1 0.8 0.02 - - - TBRC241 6 7 1 0.12 - - - - 13 17 4 0.18 - - - - 23 24 1 0.29 - - - - 28 30 2 0.28 0.02 15.6 - - 49 50 1 0.26 - - - - 56 57 1 0.15 - 51.3 - - 59 62 3 0.11 - - - - 88 89 1 0.27 0.02 12 - - 99 100 1 0.33 0.02 - - - 33 34 1 0.1 - - - - 57 59 2 0.25 - 18.2 - - 83 87 4 0.15 0.06 10.3 - - 93 94 1 0.12 0.04 14 - - 20 22 2 0.84 - - - - 50 51 1 0.12 0.02 - - - 58 59 1 0.22 - - - - 81 90 9 0.06 - 53.3 - - including 85 86 1 0.22 0.04 262 - - TBRC244 56 59 3 0.1 0.02 - - - TBRC242 TBRC243 95 96 1 0.12 - - - - 101 102 1 0.4 0.02 30.5 0.11 1.2 109 110 1 0.95 - - - 1.16 118 119 1 0.4 0.24 - - 0.93 29 30 1 1.46 0.6 - - - 75 78 3 0.25 0.02 - - - 116 117 1 0.13 - - - - 118 119 1 0.14 - - - - TBRC246 82 100 18 0.18 - - - - including 88 89 1 1.85 0.03 - - - 116 117 1 0.14 - - - - 19 21 2 2.39 0.04 - - - 46 52 6 0.31 - 15.8 - - 47 48 1 0.77 0.02 45.5 - - 68 74 6 0.14 0.03 - - - 86 87 1 0.21 - 12.7 - - TBRC245 TBRC247 including 94 96 2 0.11 0.07 - - - 111 112 1 0.11 - - - - TBRC248 7 9 2 0.47 - - - - TBRC249 36 39 3 0.23 - - - - 50 53 3 0.38 - - - - 50 51 1 0.7 - - - - including 8 Comment Silver-rich veining Hole ID From To Interval Sn W Ag Cu Zn (m) (m) (m) % % g/t % % 105 107 2 0.16 0.02 18.7 - - TBRC250 37 42 5 0.34 - - - - including 40 41 1 1.23 - - - - 56 57 1 0.14 0.04 - - - 86 19 43 118 11 14 42 62 72 72 6 6 18 20 35 35 43 55 64 74 83 107 16 41 74 88 92 13 17 30 34 72 86 94 102 111 34 42 55 71 82 94 106 87 20 44 119 19 16 43 63 80 73 11 7 25 21 49 36 44 56 68 81 84 108 18 42 75 96 94 19 18 39 35 73 87 97 103 112 45 45 72 72 83 95 107 1 1 1 1 8 2 1 1 8 1 5 1 7 1 14 1 1 1 4 7 1 1 2 1 1 8 2 6 1 9 1 1 1 3 1 1 11 3 17 1 1 1 1 0.11 0.11 0.25 0.58 0.21 0.58 0.37 0.72 0.2 0.9 1.63 7.44 0.13 0.39 0.11 0.55 0.42 0.11 0.25 0.1 0.15 0.76 0.14 0.16 0.34 0.46 0.1 0.36 0.31 1.44 0.58 0.19 0.15 0.2 0.2 0.13 0.34 0.23 2.74 0.32 0.81 - 0.02 0.09 0.02 0.09 0.03 0.09 0.05 0.16 0.03 0.02 0.02 0.02 0.05 0.02 0.02 0.1 0.02 0.07 0.05 0.02 0.05 11.4 22.7 56.4 13.9 80.9 15.9 - - 72.1 144 37.7 232 110 36.3 14.9 19.7 47.7 11.6 13.2 43.3 - 0.86 1.82 0.64 1.5 TBRC251 TBRC252 including including TBRC253 including including including and TBRC254 including TBRC255 including including TBRC256 including including 9 Comment Zinc-silver lode Hole ID TBRC257 From To Interval Sn W Ag Cu Zn (m) (m) (m) % % g/t % % 109 12 102 115 16 104 6 4 2 0.11 0.11 0.16 - - - - 10 Comment JORC CODE, 2012 - TABLE 1 Section 1 Sampling Techniques and Data – TALLEBUNG PROJECT (Criteria in this section apply to all succeeding sections) Criteria Sampling techniques Explanation Commentary • Nature and quality of sampling (e.g. cut channels, random chips, or specific specialised industry RC Drilling – the total sample (~20-30kg) is delivered via cyclone into a large plastic bag which is retained standard measurement tools appropriate to the minerals under investigation, such as downhole for future use if required. 1m intervals are split using a cone splitter on the rig into a separate calico at the time of drilling. gamma sondes, or handheld XRF instruments, etc). These examples should not be taken as limiting the broad meaning of sampling. • Include reference to measures taken to ensure sample representivity and the appropriate calibration of any measurement tools or systems used. For RC drilling, assay standards or blanks are inserted at least every 50 samples. All sample lab received weights show consistency with recovery and interval length. • Aspects of the determination of mineralisation that are Material to the Public Report. In cases Each sample was dried, crushed and pulverised as per standard industry practice. where ‘industry standard’ work has been done this would be relatively simple (e.g. ‘reverse circulation drilling was used to obtain 1 m samples from which 3 kg was pulverised to produce a RC Drilling – the total sample (~20-30kg) is delivered via cyclone into a large plastic bag which is retained 30 g charge for fire assay’). In other cases, more explanation may be required, such as where for future use if required. 1m intervals are split using a cone splitter on the rig into a separate calico at there is coarse gold that has inherent sampling problems. Unusual Commodities or the time of drilling. Where mineralisation has not been logged, 4m Composites have been made by using mineralisation types (e.g. submarine nodules) may warrant disclosure of detailed information. a spear to Combine equal amounts of samples from each 1m calico. The primary metal of interest, tin (Sn) and also tungsten (W) were determined by lithium borate fusion XRF (method ALS – ME-MS85) – considered appropriate for these elements. Multielement assaying was Completed for 48 elements by 0.25g four-acid digest with ICPMS determination (method ALS – MEMS61). See body of announcement for details on Ag reassaying for TBRC171 high-grade intercept. Reverse circulation (RC) drilling using 110mm rods, 144mm face sampling hammer. Drilling techniques • Drill type (e.g. core, reverse circulation, open-hole hammer, rotary air blast, auger, Bangka, sonic, etc) and details (e.g. core diameter, triple or standard tube, depth of diamond tails, facesampling bit or other type, whether core is oriented and if so, by what method, etc) Drill sample recovery • • • Method of recording and assessing core and chip sample recoveries and results assessed. RC drilling - high capacity RC rig was used to enable dry samples collected. Drill cyclone is cleaned Measures taken to maximise sample recovery and ensure representative nature of the samples. between rod changes and after each hole to minimise cross-hole contamination. Whether a relationship exists between sample recovery and grade and whether sample bias may have occurred due to preferential loss/gain of fine/coarse material Sample weights are recorded for each sample. Recoveries were generally excellent and consistent, however, if samples were wet the recoveries were less consistent. There is no known relationship between sample recovery and grade. Where samples recoveries are less than 95% there is no relationship observed between grade and sample recovery. Relationships between sample recovery and grade are not considered significant where recoveries exceeded 95% in fresh rock. 11 Criteria Logging • • • Explanation Commentary Whether core and chip samples have been geologically and geotechnically logged to a level of detail to support appropriate Mineral Resource estimation, mining studies and metallurgical studies Whether logging is qualitative or quantitative in nature. Core (or costean, channel, etc) photography The total length and percentage of the relevant intersections logged Systematic geological and geotechnical logging was undertaken when the holes were originally drilled. Data collected includes: • Nature and extent of lithologies. • Relationship between lithologies. • Amount and mode of occurrence of ore minerals. • Location, extent, and nature of structures such as bedding, cleavage, veins, faults etc. Structural data (alpha & beta) are recorded for orientated core. Geotechnical data such as recovery, RQD, fracture frequency, qualitative IRS, microfractures, veinlets and number of defect sets. For some geotechnical holes the orientation, nature of defects and defect fill are recorded. Both qualitative and quantitative data is collected. RC chips, half core (HQ) & ¾ core (PQ) samples are retained in trays for future reference. A representative sample of each one metre RC interval is retained in chip trays for future reference. All chips were geologically logged. Sub-sampling techniques and sample preparation • • • • • • If core, whether cut or sawn and whether quarter, half or all core taken If non-core, whether riffled, tube sampled, rotary split, etc and whether sampled wet or dry For all sample types, the nature, quality and appropriateness of the sample preparation technique Quality control procedures adopted for all sub-sampling stages to maximise representivity of samples Measures taken to ensure that the sampling is representative of the in-situ material collected, including for instance results for field duplicate/second-half sampling. Whether sample sizes are appropriate to the grain size of the material being sampled RC drilling - the total sample (~20-30kg) is delivered via cyclone into a large plastic bag which is retained for future use if required. 1m intervals are split using a cone splitter on the rig into a separate calico at the time of drilling. Where 4m Composites have been made, a spear is used to split equal amounts of each metre into the 4m Composite. Samples were dried crushed and pulverised to 90% passing 75 microns. This is considered to appropriately homogenise the sample to allow subsampling for the various assay techniques. SKY: Certified Reference Material (CRM) and blanks were inserted at least every 50 samples to assess the accuracy and reproducibility of the drill core results. The results of the standards were to be within ±10% variance from known certified result. If greater than 10% variance the standard and up to 10 samples each side were re-assayed. SGS conducted internal check samples every 20 for multielement assay. RC drilling - duplicate samples are collected of re-split intervals. Duplicates generally show excellent repeatability. Sample sizes are industry standard and considered appropriate Quality of assay data and laboratory tests • • • The nature, quality and appropriateness of the assaying and laboratory procedures used and Standard assay procedures performed by a reputable assay lab, (ALS), were undertaken. Forty-eight whether the technique is considered partial or total elements Ag, As, Cu, Fe, Pb, S, Zn are digested by four-acid digest then analysed by ICPMS (method MEFor geophysical tools, spectrometers, handheld XRF instruments, etc, the parameters used in MS61). See body of announcement for details on Ag reassaying for TBRC171 high-grade intercept. determining the analysis including instrument make and model, reading times, calibrations factors applied and their derivation, etc Sn and W assays were generated by lithium borate fusion XRF (method ME-MS85) – considered Nature of quality control procedures adopted (e.g. standards, blanks, duplicates, external appropriate for these elements. laboratory checks) and whether acceptable levels of accuracy (i.e. lack of bias) and precision have been established No geophysical tools were used in the determination of assay results. Certified reference material or blanks were inserted at least every 50 samples. Standards are purchased 12 Criteria Explanation Commentary from Certified Reference Material manufacture Companies: Standards were purchased in foil lined packets of between 60g and 100g. Different reference materials were used to cover high grade, medium grade, low grade, and trace ranges of elements, with a primary focus on Sn and Cu. Verification of sampling • and assaying • • • Drill data is Compiled and collated and reviewed by senior staff. External consultants do not routinely The verification of significant intersections by either independent or alternative Company verify exploration data until resource estimation procedures are deemed necessary. The intersection personnel. calculations were viewed by >1 geological personnel. The use of twinned holes. Documentation of primary data, data entry procedures, data verification, data storage (physical Twinned holes have been used by past explorers to validate the results achieved and have confirmed and electronic) protocols. these historic results. Discuss any adjustment to assay data Drill Hole Data including: meta data, any gear left in the drill hole, lithological, mineral, survey, sampling, magnetic susceptibility was collected and stored as physical and electronic copies or entered directly into an excel spread sheet using drop down codes. When Complete the spreadsheet was Combined into a master excel spreadsheet as the drill hole database. Assay data was provided by ALS via .csv spreadsheets. The data was validated using the results received from the known certified reference material. Hard copies of the assay certificates were stored with drill hole data such as drillers plods, invoices, and hole planning documents. Assay data is not adjusted. Location of data points • • • Accuracy and quality of surveys used to locate drill holes (collar and down-hole surveys), trenches, mine workings and other locations used in Mineral Resource estimation. Specification of the grid system used Quality and adequacy of topographic control Historic drill hole collars were located using either a licenced surveyor or on a local imperial or metric grid. Conversion of the local grid co-ordinates has been unde